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Mass flow sensors for Hydrogen Fuel Cells

For Hydrogen fuel cells control, measuring the air going into fuel cells.
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    AWM700 Series Mass air flow sensors in Hydrogen fuel cells control, measuring the air going into fuel cells.

     

    For manual, please visit our another website.

    https://www.rainbowsensor.cn

    Mass airflow sensors alternate to Honeywell sensor AWM720P1, AWM700 Series.

    Wide flow range: 12SLPM, 20SLPM, 35SLPM, 50SLPM, 100SLPM, 150SLPM, 200SLPM, 300SLPM, 500SLPM

    I2C or Analog output (1-5V)

     

    Introduction

    S4000 series of mass air flow sensors are specially designed for the measurement of medical air flow and process control, which based on the MEMS flow sensor core technology , and applied to the kinds of clean and dry gas flow measurement with achievements of facility digitalization, intelligence and high safety compared to the traditional industry. S4000 series have the property of wide range of flow measurement which satisfy different flow measuring requirements with high sensitivity, high reliability and stability and low cost.
    S4000 series promotes to development for more intelligence and energy saving.

     

    Application

    Ventilator,

    oxygen machine,

    Gas mask and respirator,

    Sprayer,

    Continuous positive airway pressure (CPAP) device,

    Anesthesia delivery,

    Leak detection,

    Spectrometer,

    Mass flow controller,

    Environmental climate control,

    Fuel cells control

     

    Feature

    Wide flow range 12SLPM-500SLPM
    High precision (1.5% F.S accuracy)
    Linear output and temperature compensation
    Maintain long-term stability with minimal zero drift
    Solid-state sensing core (no surface void or fragile membrane), anti-blocking and pressure shock

    I2C or Analog output (1-5V)
    Fast response time (20ms response time)

     

    Maximum rating

    Working temperature: -25 ° C to 85 ° C
    Storage temperature: -40 ° C to 90 ° C

    Humidity: 0~100%RH*
    Impact resistant 100 g
    The sensor is resistant to condensation

     

    Function Paremeters

     

    Electrical characteristics

    Test conditions: VIN = 12 ± 0.01 VDC, Ta = 25 ° C. Relative humidity: 40% <relative

    humidity <60%

    Maximum operating temperature range -25°C to +85°C

     

    Flow range(1)

    Unit2)

    Maximum flow rate(m/s)

    S4003V

    0-12

    SLM

    0.527

    S4004V

    0-20

    SLM

    0.877

    S4005V

    0-35

    SLM

    1.535

    S4100V

    0-50

    SLM

    2.193

    S4101V

    0-100

    SLM

    4.387

    S4102V

    0-150

    SLM

    6.58

    S4103V

    0-200

    SLM

    8.773

    S4104V

    0-300

    SLM

    13.16

    S4105V

    0-500

    SLM

    35.5

     

    Specifications

    Minimum

    Default

    Maximum

    Unit

    Supply voltage

    8

    12

    24

    VDC

    Supply current

    30

     

    20

    mA

    Analog voltage

    output (3)

    1

     

    5

    VDC

    Zero voltage

    0.95

    1

    1.05

    VDC

    Zero drift

    0.2

    %F.S

    Resolution (4)

    0.1

    %F.S

    load

    100

    KΩ

    Accuracy

    1.5

    2

    %F.S

    Response time

    20

    30

    mSec

    Overall material

    Silicon carbide, epoxy resin, polyphenylene sulfide, FR4,

    silicon as a seal

     
    1. Customizable range between 10SLM and 500SLM
    2. SLM: Standard liters per minute. Standard conditions: 0 ° C and 1 atmosphere
    3. In addition, the two-way airflow test can be customized, and the analog output is correspondingly changed. F(min)—F(max) corresponds to 1-5V output, and 0 flow corresponds to 3V;
    4. Includes temperature drift and linearity error
     
     
    Linear Output
     
    1. The unidirectional airflow mode: (calculation formula)
    Flow = [(VOUT -1 V) / 4 V] × full scale flow
    For example: S4103V has a full-scale flow of 200 SLM. When the output voltage is read at 2.5V,
    the instantaneous flow rate is [(2.5V-1V) / 4V × 200 SLM] = 75 SLM

    2. Two-way airflow mode: (calculation formula)
    Forward flow = [(VOUT -3 V)/2 V] × full scale flow
    Reverse flow = [(3 V- VOUT)/2 V] × full scale flow
     
     
    Shell Size
     
    Note 1: The connector can be matched with a connecting line according to customer requirements.